Fulltext TSBs

Technical Service Bulletins

TSB
01-9-1
  • VIBRATION – VIBRATION FELT AT HIGH SPEEDS – TRANSMISSION OUTPUT SHAFT BUSHING OR SEAL DAMAGED OR OUT OF POSITION – 4X2 MODELS EQUIPPED WITH 4R70W AUTOMATIC TRANSMISSION AND 139 INCH WHEELBASE ONLY – BUILT BEFORE 3/1/2001
  • TRANSMISSION – 4R70W – TRANSMISSION OUTPUT SHAFT BUSHING OR SEAL DAMAGED OR OUT OF POSITION – 4X2 MODELS EQUIPPED WITH 4R70W AUTOMATIC TRANSMISSION AND 139 INCH WHEELBASE ONLY – BUILT BEFORE 3/1/2001
Publication Date: APRIL 27, 2001

FORD:
2001 F-150

ISSUE:

Some vehicles built before 3/1/2001 may exhibit a high speed driveline vibration that may cause possible transmission and/or driveshaft damage. This may result in the 4R70W transmission extension housing bushing to be spun out of the extension housing or may cause the extension housing seal to leak.

ACTION:

Verify the extension housing bushing is spun out of position or damaged or the extension housing seal is leaking. If normal diagnostics cannot pinpoint the cause, reprogram the Powertrain Control Module (PCM). The updated calibration will reduce the maximum top speed of the vehicle to reduce the possibility of vibration. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

If the driveshaft or extension housing bushing is damaged, replace or repair per the following procedure and 2001 Workshop Manual Procedures. Reprogram the PCM with an updated calibration. Refer to the following PCM Calibration Information Chart.

  1. Raise the vehicle on a hoist and inspect the transmission extension housing bushing and seal for damage.
  2. If the extension housing bushing or seal is damaged, remove the driveshaft and transmission extension housing per 2001 Workshop Manual, Section 307-01B. Install a new Extension Housing Assembly (F3LY-7A039-A), and a new Extension Housing Gasket (F6AZ-7086-A). Verify transmission fluid level.
  3. If the driveshaft or yoke is damaged, replace as necessary. Use the part list for the correct driveshaft application. During driveshaft installation, follow the procedure outlined in the following note.

    NOTE:THE INDEX PAINT MARKS ON THE OUTPUT SHAFT, DRIVESHAFT, AND REAR AXLE MUST BE ALIGNED. THE INDEXED BALANCE MARK ON THE OUTPUT SHAFT AND THE INDEXED BALANCE MARK ON THE NEW DRIVESHAFT YOKE MUST BE ALIGNED (FIGURE 1). ALIGNMENT OF THE INDEX MARKS ON THE REAR DRIVESHAFT TUBE AND THE REAR AXLE FLANGE MUST BE PERFORMED (FIGURE 2).


    PCM CALIBRATION INFORMATION
    ApplicationOld Part Number (-12A650-)Tear TagNew Part Number (-12A650-)Old CalibrationNew CalibrationNGS/WDS Qualifier
    4.2L, 4R70W with 3.31, 3.55 Axle, 50-State F-1501L3F-DDXAZ41L3Z-DE1F512C05101F512C0511WDS B12.11 Release
    4.6L, 4R70W, 4X2, Federal F-1501L3F-AVCWIZ31L3Z-AVD1F516M0A101F516M0A11WDS B12.11 Release
    4.6L, 4R70W, 4X2, Calif. F-1501L3F-KCEME31L3Z-KD1F516D0A101F516D0A11WDS B12.11 Release
    5.4L, 4R70W, Base/Harley, Federal F-1501L3F-ASBSVB21L3Z-ASC1F514F0A051F514F0A10WDS B12.11 Release
    5.4L, 4R70W, Base/Harley, Calif. F-1501L3F-ARBCML21L3Z-ARC1F514E0B051F514E0B10WDS B12.11 Release



PART NUMBERPART NAME
F85Z-4602-FADriveshaft (4.2L/4.6L, 4X2, 4R70W, 139″ WB)
XL3Z-4602-BA Driveshaft (5.4L, 4X2, 4R70W, 139″ WB)
F3LY-7A039-A Transmission Extension Housing
F6AZ-7086-AGasket – Extension Housing

Obtain an Authorized Modifications Decal (FPS 8262 – obtainable through DOES II, 25/pkg) and list the date, dealer number, and summary of modifications performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.


AUTHORIZED MODIFICATIONS

THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
Reprogrammed Powertrain Control Module (PCM) Per TSB 01-9-1
 
 
 
THESE MODIFICATIONS HAVE BEEN APPROVED, AS APPROPRIATE, BY EPA AND CARB.
DEALER NUMBER:——————————————DATE:

CHANGE AUTHORITY:

FPS 8262 9/78 FORD MOTOR COMPANY PRINTED IN U.S.A.



OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Information Only

OASIS CODES:

504000, 510000, 597997, 703000, 703300




Figure 1 – Article 01-9-1




Figure 2 – Article 01-9-1


Copyright © 2001 Ford Motor Company